Grammarly vs Sudowrite
Grammarly and Sudowrite are two of the most-compared Writing tools. Grammarly starts at $12/mo and Sudowrite at $19/mo — and they differ in features, ratings, and the use cases they suit best. This side-by-side breakdown covers pricing, key features, the pros and cons of each, and a clear verdict to help you pick the right one.
Pros & cons
Pros
- ✓Excellent free plan
- ✓Works everywhere (browser, desktop, mobile)
- ✓Real-time grammar and clarity fixes
- ✓Tone detection and rewrites
- ✓Trusted by millions
Cons
- ✗Best suited for English only
- ✗Premium is pricey for individuals
- ✗Suggestions can be overly conservative
Pros
- ✓Muse 1.5 model fine-tuned on published fiction
- ✓Story Engine for guided novel development
- ✓Story Bible keeps long manuscripts consistent
- ✓Competitive annual pricing (from $10/mo)
- ✓Free trial — no credit card required
Cons
- ✗No PDF, EPUB, or DOCX export
- ✗Not suitable for non-fiction or marketing copy
- ✗Credit system can confuse beginners
- ✗No mobile app (web only)
The verdict
Grammarly and Sudowrite are close competitors, but a few differences stand out. Grammarly is the more affordable option at $12/mo — about 37% less than Sudowrite at $19/mo. Grammarly earns the higher user rating (4.6 vs 4.5). Grammarly offers an API that Sudowrite lacks — important if you need integrations or automation. Grammarly adds a mobile app for working on the go. Bottom line: choose Grammarly if you want to spend less; choose Sudowrite if you prefer its overall feature set.
Which one should you choose?
When to choose Grammarly
AI writing assistant for grammar, clarity, and tone.
Pick Grammarly if you want to spend less, want the highest-rated option, need API access and integrations, and want a mobile app.
When to choose Sudowrite
The AI writing partner built for novelists
Pick Sudowrite if you prefer its overall feature set.
Frequently asked questions
What's the difference between Grammarly and Sudowrite?+
Grammarly: Grammar and writing assistant. Sudowrite: Sudowrite is an AI writing assistant built specifically for fiction — novelists, short-story authors, and screenwriters. The biggest differences come down to price, ratings, and features.
Which is cheaper, Grammarly or Sudowrite?+
Grammarly is cheaper at $12/mo — about 37% less than Sudowrite at $19/mo.
Which has the higher rating?+
Grammarly scores 4.6 versus 4.5 for the other tool.
Does Grammarly or Sudowrite have a free plan?+
Both Grammarly and Sudowrite offer a free plan, so you can try either before paying.
Which is better for Writing?+
For Writing, Grammarly is the stronger overall pick. Choose Sudowrite instead if you prefer its overall feature set.